The Associated Press |
Emergency personnel attend to one of the vehicles involved in a crash at Heathrow Airport, London on Wednesday Feb. 14, 2018. London's Heathrow Airport says two men have been injured after a "serious accident involving two vehicles" on the airfield. The airport says it is working with police to investigate the accident, which did not involve any passengers. (Steve Parsons/PA via AP)

The Associated Press |
Emergency personnel attend to one of the vehicles involved in a crash at Heathrow Airport, London on Wednesday Feb. 14, 2018. London's Heathrow Airport says two men have been injured after a "serious accident involving two vehicles" on the airfield. The airport says it is working with police to investigate the accident, which did not involve any passengers. (Steve Parsons/PA via AP)